Grant Denyer to join Em Rusciano's 2Day FM breakfast show

The appointment means the comedian will have not one, but two new co-hosts in the new year. Last month it was revealed Ed Kavalee was replacing Harley Breen after he announced on-air he was quitting breakfast radio.

In a statement, Denyer said he was thrilled to be joining 2DAY FM's 2018 lineup.

"I'm told breakfast radio is even more dangerous than race car driving and I fractured my bum and almost died doing that this year... so, what could go wrong?"

The former journalist then poked fun at his height, saying: "I won't need the booster seat Ed because it's in my contract I get to sit on your knee."

The Hit Network's head of content Gemma Fordham described Denyer has one of Australia's most energetic personalities.

"[He] was a dynamo on breakfast TV and reshaped the landscape," she said. "When it comes to entertaining Aussies, his instincts are spot on. I know he is the perfect addition to brighten up Sydney's morning alongside Em and Ed."

Rusciano described Denyer as a "blond bombshell" and "glamorous bogan".

2DAY FM's breakfast shows have been short-lived ever since Kyle and Jackie O jumped ship to rival station KIIS FM, taking a large chunk of listeners with them. However, Rusciano's program managed to survive for a second year despite pulling just 3.3 per cent of Sydney breakfast radio listeners in the most recent survey.